#comcenterShow, #comcenterHide
{
cursor:pointer;
z-index: 10000;
position: fixed;
top: 6px;
right: 0px;
background: black;
border-radius: 5px;
color: white;
font-size: 200%;
width: 50px;
text-align: center;
display: none;
}
#comcenterHide
{
right: -100px;
display: block;
}
#comcenterShow
{
z-index: 10001;
background-color: transparent;
}